The rotator cuff is a group of four muscles around the shoulder. They function to provide both shoulder mobility and power as well as stability. Rotator cuff tears can be a significant cause of pain and disability for the patient. Surgical repair is done to reconnect the torn tendon(s) to the bone and has been shown to be an effective treatment in the presence of full-thickness tears. The goals of Rotator Cuff (RC)surgery are to decrease pain, increase range of motion(ROM) and strength. This is done with a small incision called a mini-open. Standard care following this surgical repair is to be placed in a sling for 6 weeks to protect the repaired shoulder tendons. During this time ROM exercises are done using the non-operated arm for assistance. No active or voluntary movement is allowed during the first 6 weeks. Unfortunately, some of these patients develop shoulder stiffness which slows their recovery and return to work or daily activities and may result in increased use and cost of rehabilitation services.